You do know you can arrive at the second by means of the first, don't you?
Doing an x vs y thing is still kinda pushing it. But I still ask my teacher some of those.
Sure, you get my point though.
I think all grading systems are stupid.
(unless it's stupid for being meaninglessly obvious, like Fuer Elise Vs Scarbo)
Personally I find grading pieces precisely to a number level is a silly thing to do. It can put barriers in front of people before they even try to learn a piece or may offer a false sense of achievement. When I was younger I would learn pieces that inspired me without even thinking about difficulty just focus on trying to produce the nice sound.
That said, lately I've spent a bit of time working on the idea of a much more specific "teaching method" of my own. I've been going through large numbers of pieces and grading them based on my own thoughts, not based on my experiences as a student but based on my understanding of a range of skills that I wish to develop in a student.So instead of having this idea of lets cover a bunch of works at grade x - instead I have a massive explosion chart of piano skills, with many branches, and many levels per branch.So I mentally assess a piece as being a few different levels, as referred to by each individual element, which I can cross reference with where a student is in regard to each element..Doing so has given me a different perspective on grades, - I still think they are fairly useless to the individual, because the system is a little limited. But I can much better assess why certain things appear in certain grades and how to better sequence works for a student to learn.. ..where now I might split grade 2 into 40 pieces, in a specific order (perhaps groups of 5-10), and have concrete reasons why a piece is in grade three. While practically identical to one in grade 2 so far as many of its challenges it maybe placed in my grade three because I choose not to expose a student to a work that has a key signature with 3 flats/sharps until they've done at least X number of pieces with 2 flats/sharps for example.. But for a student at that level, they may end up finding the level 3 piece easier than some of the level 2 ones. So the grading has to do with degree of prior exposure to different concepts and learning somewhat hidden aspects in a desirable order, rather than a flat out this is harder than that.
Did you ever progress with the idea of a database? Or may we expect a book published soon?
A piece can be easy in the sense of learning it to a certain level, but still be much more difficult to play really beautifully
You see. I am a 3 year old on the internet, arguing with "pianists". I can play nothing but MY MUSIC BOOKS!